A high-energy-density NASICON-type Na3V1.25Ga0.75(PO4)3 cathode with reversible V4+/V5+ redox couple for sodium ion batteries

Yuxiang Chen,Xiangyue Liao,Peng Wang,Ji Chen,Xiaoqin Zhang,Xingqiao Wu,Sean C. Smith,Dunmin Lin,Xin Tan,Qiaoji Zheng

Journal of Colloid and Interface Science（2024）

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摘要

Na3V1.25Ga0.75(PO4)3 cathode exhibits high capacity, high energy density and long lifetime of sodium ion battery due to Ga3+ activation of V4+/V5+ in the high potential region of Na3V2(PO4)3-based cathodes to achieve reversible multi-electron reversible reaction in a wide voltage range; and Ga3+ is not involved in the electrochemical process, making the cycling process very stable.

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关键词

Na3V2(PO4)3,Multielectron reaction,Sodium-ion batteries,High energy density,Ga3+ doping

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